What does CUSIP 925815102 represent in this 13F holders report?

CUSIP 925815102 is the security identifier for VICR - VICOR CORP - Common Stock, par value $0.01 per share used to aggregate holder disclosures.

How many institutions held VICR - VICOR CORP - Common Stock, par value $0.01 per share in Q1 2021?

192 institutional investors reported VICR - VICOR CORP - Common Stock, par value $0.01 per share for Q1 2021. Use the holders table for investor-level position and value details.

VICOR CORP - Common Stock, par value $0.01 per share (VICR)

CUSIP: 925815102

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock, par value $0.01 per share
Shares outstanding: 33,979,484
Total 13F shares: 16,150,553
Share change: +419,204
Total reported value: $1,373,453,035
Put/Call ratio: 50%
Price per share: $85.03
Number of holders: 192
Value change: +$32,204,794
Number of buys: 88
Number of sells: 103

Quarterly Holders Quick Answers

What is CUSIP 925815102?
CUSIP 925815102 identifies VICR - VICOR CORP - Common Stock, par value $0.01 per share in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 925815102:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of VICR - VICOR CORP - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	9%	3,051,951	$281,451,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	6.2%	2,105,978	$194,213,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	3.4%	1,171,211	$108,009,000	—	31 Dec 2020	13F
Hood River Capital Management LLC	13F	Company	2.8%	958,631	$88,405,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	1.7%	583,707	$53,829,000	—	31 Dec 2020	13F
ASHFORD CAPITAL MANAGEMENT INC	13F	Company	1.4%	484,071	$44,641,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.4%	473,516	$43,668,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	1%	348,782	$32,163,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.95%	322,494	$29,740,000	—	31 Dec 2020	13F
Capital Research Global Investors	13F	Company	0.93%	317,000	$29,234,000	—	31 Dec 2020	13F
Granite Investment Partners, LLC	13F	Company	0.9%	306,192	$28,237,000	—	31 Dec 2020	13F
FIRST TRUST ADVISORS LP	13F	Company	0.76%	256,605	$23,664,000	—	31 Dec 2020	13F
DRIEHAUS CAPITAL MANAGEMENT LLC	13F	Company	0.75%	255,369	$23,550,000	—	31 Dec 2020	13F
NEEDHAM INVESTMENT MANAGEMENT LLC	13F	Company	0.68%	229,850	$21,196,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.6%	205,295	$18,930,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	0.56%	190,794	$17,595,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.49%	165,528	$15,265,000	—	31 Dec 2020	13F
S Squared Technology, LLC	13F	Company	0.46%	156,780	$14,458,000	—	31 Dec 2020	13F
EMERALD ADVISERS, LLC	13F	Company	0.46%	155,836	$14,371,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.44%	150,148	$13,846,000	—	31 Dec 2020	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.43%	147,680	$13,619,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.4%	136,217	$12,562,000	—	31 Dec 2020	13F
Trellus Management Company, LLC	13F	Company	0.38%	129,945	$11,984,000	—	31 Dec 2020	13F
HERALD INVESTMENT MANAGEMENT Ltd	13F	Company	0.36%	122,000	$11,260,000	—	31 Dec 2020	13F
KORNITZER CAPITAL MANAGEMENT INC /KS	13F	Company	0.33%	111,120	$10,247,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	0.31%	104,213	$9,610,000	—	31 Dec 2020	13F
Ararat Capital Management LP	13F	Company	0.3%	103,378	$9,534,000	—	31 Dec 2020	13F
G2 Investment Partners Management LLC	13F	Company	0.28%	96,234	$8,875,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.27%	93,207	$8,595,000	—	31 Dec 2020	13F
Alight Capital Management LP	13F	Company	0.24%	80,000	$7,378,000	—	31 Dec 2020	13F
AWM Investment Company, Inc.	13F	Company	0.23%	79,000	$7,285,000	—	31 Dec 2020	13F
ARS Investment Partners, LLC	13F	Company	0.23%	76,975	$7,099,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.22%	75,568	$6,969,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.2%	68,761	$6,342,000	—	31 Dec 2020	13F
Granahan Investment Management, LLC	13F	Company	0.19%	65,560	$6,046,000	—	31 Dec 2020	13F
Legal & General Group Plc	13F	Company	0.19%	64,779	$5,974,000	—	31 Dec 2020	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	0.19%	64,545	$5,952,000	—	31 Dec 2020	13F
CONGRESS ASSET MANAGEMENT CO	13F	Company	0.19%	64,339	$5,933,000	—	31 Dec 2020	13F
Neuberger Berman Group LLC	13F	Company	0.19%	63,800	$5,884,000	—	31 Dec 2020	13F
NEXT CENTURY GROWTH INVESTORS LLC	13F	Company	0.18%	62,781	$5,789,000	—	31 Dec 2020	13F
RICE HALL JAMES & ASSOCIATES, LLC	13F	Company	0.18%	60,653	$5,593,000	—	31 Dec 2020	13F
Analog Century Management LP	13F	Company	0.17%	58,573	$5,402,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.17%	58,234	$5,370,000	—	31 Dec 2020	13F
INVESTMENT MANAGEMENT OF VIRGINIA LLC	13F	Company	0.17%	56,685	$5,228,000	—	31 Dec 2020	13F
RK Capital Management, LLC	13F	Company	0.16%	55,100	$5,081,000	—	31 Dec 2020	13F
First Washington CORP	13F	Company	0.15%	50,223	$4,632,000	—	31 Dec 2020	13F
HARBOR INVESTMENT ADVISORY, LLC	13F	Company	0.15%	49,600	$4,574,000	—	31 Dec 2020	13F
York State Teachers Retirement System New	13F	Individual	0.14%	47,388	$4,370,000	—	31 Dec 2020	13F
PUBLIC SECTOR PENSION INVESTMENT BOARD	13F	Company	0.14%	46,709	$4,308,000	—	31 Dec 2020	13F
Janney Montgomery Scott LLC	13F	Company	0.14%	46,465	$4,285,000	—	31 Dec 2020	13F

Institutional Holders of VICOR CORP - Common Stock, par value $0.01 per share (VICR) as of Q1 2021

As of 31 Mar 2021, VICOR CORP - Common Stock, par value $0.01 per share (VICR) was held by 192 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 16,150,553 shares. The largest 10 holders included BlackRock Inc., VANGUARD GROUP INC, Invesco Ltd., Hood River Capital Management LLC, Capital Research Global Investors, STATE STREET CORP, ASHFORD CAPITAL MANAGEMENT INC, DIMENSIONAL FUND ADVISORS LP, DRIEHAUS CAPITAL MANAGEMENT LLC, and GEODE CAPITAL MANAGEMENT, LLC. This page lists 192 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

192

Q1 2021 holders

192

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.